6th Grade Math Textbook, Progress

Copy and complete the graph to show the data in the table.

1.

2005 850

2004 740

2003 700

2002 620

2001 525

2000 585

Year Profit (in dollars)

School Fair Profits

Use the completed line graph for exercises 2–5.

2. What does each interval on the 3. What trend does the graph show?
   vertical scale represent?


3. By how much did profits increase 5. What is the range of the profits?
   from 2003 to 2005? What is the mean (average) profit?


4. A certain clock loses 3 minutes every 12 hours as shown in
   the table. Draw a line graph of the data and determine if the
   line slopes upward or downward. Explain why this happens.

Number of Hours 12 24 36 48 60

Time Lost (minutes) 3 6 91 2 15

Use the given line graph.

7. As bincreases, what happens to c?


8. As cdecreases, what happens to b?


9. If c
   75, what is the value of b?

10.Predict the value of bif c
165.

0 12345

15

30

45

60

75

90

105

Quantity

c

Quantity b

67

200020012002200320042005

850

800

750

700

650

600

550

500

0

Amount (dollars)

Year

School Fair

Profits

8206-2_308-309 2/27/06 9:26 AM Page 309